Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hi im kevin the knocking you ask about is this every time you brake or only under hard braking ? What colour was the smoke ?how many miles do you do in car does it get used often ?
Has the car sat for any periods of time recently ?
I mean it sounds as though you haveva rust patch on the front rotors causing your knocking under heavy braking .this will either get better the more brakes are used and will clean surface of rotor .or it will slowly get worse and rotors will need to be replaced to cure .the smoke sounds a lot like condensation if it hasnt happened again no need to worry
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Yeah deffinatly if they are rusty they can make some very heavy knocking noises and in some cases give a vibration through car and steering wheel .replacing them will cure your issue
Yes to be totally honest all modern cars last long as maintenence is kept up to date please remember to rate my service
Yes you rest tyre pressure through dash board
It goes back ?
Ok so you rest system it accept that its been reset but then comes back ?
ok this sounds like you possibly have a bad tyre valve not giving a correct reading .you will need to have car plugged in to a mercedes scan tool to find which valve is at fault
Not a serious issue at all its more of a convinience issue .autozone may be able to do this for you
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No problem remember to rate and ask for me in future